Passenger restraint system for roller coasters

A passenger restraint system for roller coasters designed to maintain a passenger in an essentially seated or lying posture,

• wherein the passenger restraint system comprises a fixed column and a seat column designed to support and hold the passenger, which seat column is coupled to the fixed column so as to be displacable with respect to the fixed column during a roller coaster ride,
• wherein the passenger restraint system further comprises a balancing device ensuring a balancing of the seat column, which balancing device is fixed, at a first end, to the fixed column and, at a second end, to the seat column,
• wherein the balancing device is configured to ensure a vertical travel of the seat column during the roller coaster ride in dependence of a vertical acceleration exerted on the passenger,
• wherein the passenger restraint system is configured such that the seat column occupies, in the presence of the passenger and in the absence of any vertical acceleration other than that due to gravity, a lower position with respect to the fixed column,
• and wherein the passenger restraint system further comprises a holding device secured to the seat column, the holding device comprising a backrest fixed to the seat column, against which the passenger can bear, with a back placed against the backrest.